Some of the worst was on that TV show Flashpoint. Tango and I were tearing that show to pieces on a weekly basis.
One episode the "sniper" had the solution, finger tightening on the trigger, and his bolt handle was up on his weapon.
Another classic, same guy, has a bolt action rifle, covering his partner and the damn scope is mounted UPSIDE DOWN!!
Then there was an episode of CSI:Miami where they were tracking a true sniper, and the guy was taking out civilians with something called "A kill zone". This was the placing of three bullets, in three victim's heads, in a left to right fashion.
First victim, hit above the Right Eyebrow.
Second victim, hit dead center between the eyes.
Third victim, hit above the Left Eyebrow.
That was the killer announcing how good he was, because he was shooting the "Kill Zone"
Whiskey Tango Foxtrot Over?!?!